Tri-stack hollow handle plastic knife



FIG. 1 is a front elevational view of a knife showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is an enlarged left side elevational view thereof;

FIG. 4 is an enlarged front elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a perspective view thereof. 

CLAIM The ornamental design for a tri-stack hollow handle plastic knife, as shown. 